Men's Slim-Fit Base Layer Set – Long-Sleeve Thermal Top & Bottoms

On a base layer, slim fit isn't a style choice — it's the whole mechanism. The layer has to sit against your skin to trap warm air; leave a gap and it does nothing but add a shirt. This set is cut close through the body and leg with medium stretch, so it follows you rather than restricting, and two pieces mean no gap at the waist halfway through a cold morning.

• Skin-Close Fit: A slim cut sits against the skin to actually trap warmth where a loose layer fails.
• Moves With You: Medium stretch follows your movement without restricting.
• Full Coverage: A matching top and bottom leave no cold gap at the waist.

Specifications:

• Set: Long-sleeve top and bottoms
• Fit: Slim, medium stretch
• Feel: Soft against the skin
• Sizes: S–XXL
• Colors: White, Black, Blue, Gray

A close-fitting thermal base-layer set that traps warmth against the skin and covers you top to bottom.